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Finding the Fourth Proportional to 8,812.26, 12,147.12 and 6,679.26

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Solution

The fourth proportional to 8,812.26, 12,147.12 and 6,679.26 is: 9,206.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.26 : 12,147.12 = 6,679.26 : x
  2. Step 2: Convert to fraction form
    8,812.26/12,147.12 = 6,679.26/x
  3. Step 3: Cross multiply
    8,812.26x = 12,147.12 × 6,679.26
  4. Step 4: Simplify right side
    8,812.26x = 81,133,772.73
  5. Step 5: Solve for x
    x = 81,133,772.73/8,812.26
  6. Step 6: Final answer
    x = 9,206.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.